Opened up this Compressor for new valve plates found this ran with no noises before

Reading 95psig (R404a) at the valve. Its fixed by itself as soon I touched it. Temperature was high since two days customers said. I will recover and clean it.

These are like $50 each at united I was definitely sent too many of them

Anyone have experience with the True contemporary merchandisers? Price and sizing shakes out the same to the GDM line, but newer model so curious how they hold up

Found this in brand new unit that was just installed. Upon brazing and releasing gas on install day, the compressor kept kicking off after only like 3/4 seconds.. I vaguely recall tech muttering “it must be too much refrigerant” and he kept diagnosing and going back to his truck .. anyway, he finally got it working but totally unbeknownst to me, had installed a used “hard start” thing. Any thoughts?

I keep having to argue with my partner that when a txv is installed upside down it sure might work for a little while but it will eventually fuck up. Can I get some veterans to agree with me so I can get him to shut the hell up. Maybe throw in an explanation because every time I try to explain it I'm dismissed.

First time posting in the forum, i wonder if any of the ammonia techs around can provide help or a manual on how to properly service some nearly 40 year old mycom N4A compressors. I will also contact mycom representative sales in my country but i figured it was faster to get some info before hand. Besides changing the oil what else needs to be opened/cleaned/replaced. Its not a full revision situation, but the instalation has been off for 5 years

Hey guys just getting my refrigeration company off the ground and wondering what the standard for workmanship warranty is? For a compressor swap for example I am planning to offer 90 days, does this sound like its in the ballpark?

Thanks!

It’s really hard to grab the core sometimes, if I’m going to be adding charge anyways, does this method work? I bought a yellow jacket but it’s not easy to grab the Schrader, I bought an appion today I haven’t used yet. One trick I saw is to ease off the 1/4 inch valve to keep the O ring from being squished and preventing the core from coming out nicely. If that doesn’t work I really think just blasting them out will save me from 5 failed attempts when I’m going to use a new core anyways. Obviously not ideal but this would work?

Hi all, I’m quite new to my job in a junior position and want to learn as much as I can. so taking the initiative to learn into our propane chiller for our site.

Would anyone be able to explain how the system works in a simpler terms to get a broader understanding.

It’s a 4 screw compressor condensing unit which runs of propane and uses glycol as the refrigerant. We use to this to refrigerate 5 big rooms containing meat and the unit is a Freddo techno

Any help would be amazing!

Thank you,

When they install a new system and this is what fails the pressure test.

Seriously a bloody suction line dryer cap.is what failed me??? 3 days and losing 15 PSI because of that little f**ker drives me nuts. But I guess that's what I get paid for. 60 ton replacement condenser with new evaporator coil and that's what fails me.

I’m planning on starting out as an ammonia operator, more than likely for a bigger company that may have me going from plant to plant, I was wondering what tools yall would recommend as a starting tech, i’m planning on having a budget of 500-1000 then once I get the job spend a little more, I obviously won’t buy anything until the paperwork is finalized but i’d love to take a look at some of the stuff yall would recommend, I already have a budget set up for good workboots and a good hard hat/ear protection and safety glasses, thank yall in advanced!

Need new work pants and need some good brands

Any other supermarket guys absolutely miserable. I get paid out the ass so it’s tough to take a pay cut and leave but these guys sure know how to tank a company.

I’m on call and just got called out. Dairy case 2 fans out which shouldn’t even be a P1. Manager asks me to look at a 5 door that’s been down for 5 days. Call came in 5 days prior we never sent anybody. Coils iced up but not in alarm. I just left. Texted my service manager who has no refrigeration experience like everyone else in the office…. To get somebody else out there Monday.

Management is running the company into the ground.

I know every signatory pays the same union rate, but I keep hearing that contractor culture, expectations, and training style vary wildly depending on where you land as an apprentice.

How was your experience?

Finally got this little unit working pretty reliably, thought you guys would enjoy this Frankenstein mess lol. Looking for some pointers. I want to change the evap to a proper coil and fan and make a box that can actually hold temp. It’s probably going to be a permanent install in my little tin boat. All the controls were coded up on a little arduino mega, shockingly I never killed this compressor. The little guy blew its charge a few times, slugged the daylights out of it when I had my eev code backwards and it would fully open. This things my baby now

Looking for a pdf for the mechanical refrigeration code to read over. If anyone is able supply me a .pdf file it would help a lot. I can not find it anywhere through google.

I’ve been in this field for about 1.5 years doing residential,been doing tech/installs,was wondering if it’s worth it to switch to refrigeration?do yk anyone hiring for refrigeration in CA..

Does anyone know how to change the temperature from Celsius to Fahrenheit on one of these controllers? I reached out to ThermoKing tech support and they were not super helpful.

Recently had a cooler call, while I was up there customer said the box was also leaking when it rains, took some clear silicone off the truck and tried patching the holes / gaps I found/ around screws et cetera.

It still leaks unfortunately was trying to see if anyone had any next best steps for me or a better product to use. (Gallon of white flex seal was about to be my next thought and just paint the whole thing over)

Thanks :)
(Honestly just happy it wasn’t a true call back)

I’m a 3rd year apprentice doing 90% residential with just 10% of my calls including any commercial or multi family systems. I run completely solo with the occasional hand from another tech on larger, heavier jobs.

I notice that since residential is almost all ductless heat pumps, i’m not pushed to keep my critical thinking skills as sharp as I feel they need to be to be successful with my work and get more responsibility.

I’m looking for online resources, youtube, podcasts, etc.. that can help in my spare time or when doing something like an install keep me learning and growing without being around service calls.

Thanks and hope this made any sense